Analysis of interatomic Contacts of Structural Units in PDB entry:
1IRU

Contacts of Structural Units (CSU) are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332).
This page provides analyses of contacts formed by:

chains
helices
sheets
residues

For analysis of ligand-protein contacts, use:

LPC software

3D structure can be seen in additional window with STING software for 1IRU entry

There are 28 chains in PDB entry 1IRU (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	SER 2	ARG 245
B	ALA 1	ALA 233
C	SER 2	LYS 251
D	SER 2	GLN 244
E	TYR 8	ILE 241
F	ASN 4	GLN 241
G	SER 1	GLU 245
H	THR 1	LEU 202
I	THR 1	GLU 220
J	SER 2	ASP 205
K	MET 1	GLN 199
L	THR 1	GLY 201
M	ARG 1	ASP 213
N	THR 1	GLY 217
O	SER 2	ARG 245
P	ALA 1	ALA 233
Q	SER 2	LYS 251
R	SER 2	GLN 244
S	TYR 8	ILE 241
T	ASN 4	GLN 241
U	SER 1	GLU 245
V	THR 1	LEU 202
W	THR 1	GLU 220
X	SER 2	ASP 205
Y	MET 1	GLN 199
Z	THR 1	GLY 201
1	ARG 1	ASP 213
2	THR 1	GLY 217

There are163 helices in PDB entry 1IRU. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	22	34	Right-handed alpha
Helix 2	2	A	62	66	Right-handed 310
Helix 3	3	A	83	106	Right-handed alpha
Helix 4	4	A	110	128	Right-handed alpha
Helix 5	5	A	171	183	Right-handed alpha
Helix 6	6	A	190	206	Right-handed alpha
Helix 7	7	A	231	244	Right-handed alpha
Helix 8	8	B	18	30	Right-handed alpha
Helix 9	9	B	78	101	Right-handed alpha
Helix 10	10	B	105	120	Right-handed alpha
Helix 11	11	B	165	177	Right-handed alpha
Helix 12	12	B	182	196	Right-handed alpha
Helix 13	13	B	221	230	Right-handed alpha
Helix 14	14	C	18	29	Right-handed alpha
Helix 15	15	C	79	102	Right-handed alpha
Helix 16	16	C	106	121	Right-handed alpha
Helix 17	17	C	169	179	Right-handed alpha
Helix 18	18	C	185	200	Right-handed alpha
Helix 19	19	C	229	242	Right-handed alpha
Helix 20	20	D	16	28	Right-handed alpha
Helix 21	21	D	55	60	Right-handed 310
Helix 22	22	D	76	98	Right-handed alpha
Helix 23	23	D	103	118	Right-handed alpha
Helix 24	24	D	164	173	Right-handed alpha
Helix 25	25	D	183	197	Right-handed alpha
Helix 26	26	D	221	229	Right-handed alpha
Helix 27	27	E	21	32	Right-handed alpha
Helix 28	28	E	81	104	Right-handed alpha
Helix 29	29	E	108	118	Right-handed alpha
Helix 30	30	E	173	185	Right-handed alpha
Helix 31	31	E	190	206	Right-handed alpha
Helix 32	32	E	230	239	Right-handed alpha
Helix 33	33	F	19	32	Right-handed alpha
Helix 34	34	F	77	100	Right-handed alpha
Helix 35	35	F	104	122	Right-handed alpha
Helix 36	36	F	164	180	Right-handed alpha
Helix 37	37	F	183	197	Right-handed alpha
Helix 38	38	F	226	228	Right-handed 310
Helix 39	39	F	229	234	Right-handed alpha
Helix 40	40	G	20	32	Right-handed alpha
Helix 41	41	G	80	103	Right-handed alpha
Helix 42	42	G	107	122	Right-handed alpha
Helix 43	43	G	168	177	Right-handed alpha
Helix 44	44	G	180	184	Right-handed 310
Helix 45	45	G	185	201	Right-handed alpha
Helix 46	46	G	228	244	Right-handed alpha
Helix 47	47	H	48	71	Right-handed alpha
Helix 48	48	H	75	90	Right-handed alpha
Helix 49	49	H	129	134	Right-handed 310
Helix 50	50	H	135	143	Right-handed alpha
Helix 51	51	H	148	167	Right-handed alpha
Helix 52	52	H	190	194	Right-handed 310
Helix 53	53	I	48	71	Right-handed alpha
Helix 54	54	I	75	90	Right-handed alpha
Helix 55	55	I	130	141	Right-handed alpha
Helix 56	56	I	147	153	Right-handed alpha
Helix 57	57	I	153	166	Right-handed alpha
Helix 58	58	J	56	78	Right-handed alpha
Helix 59	59	J	83	97	Right-handed alpha
Helix 60	60	J	142	154	Right-handed alpha
Helix 61	61	J	159	175	Right-handed alpha
Helix 62	62	J	176	178	Right-handed 310
Helix 63	63	K	51	72	Right-handed alpha
Helix 64	64	K	76	93	Right-handed alpha
Helix 65	65	K	133	147	Right-handed alpha
Helix 66	66	K	152	170	Right-handed alpha
Helix 67	67	L	48	71	Right-handed alpha
Helix 68	68	L	75	89	Right-handed alpha
Helix 69	69	L	131	141	Right-handed alpha
Helix 70	70	L	148	167	Right-handed alpha
Helix 71	71	L	192	200	Right-handed alpha
Helix 72	72	M	57	80	Right-handed alpha
Helix 73	73	M	84	99	Right-handed alpha
Helix 74	74	M	141	153	Right-handed alpha
Helix 75	75	M	167	186	Right-handed alpha
Helix 76	76	N	57	78	Right-handed alpha
Helix 77	77	N	84	102	Right-handed alpha
Helix 78	78	N	141	146	Right-handed alpha
Helix 79	79	N	146	155	Right-handed alpha
Helix 80	80	N	161	180	Right-handed alpha
Helix 81	81	N	209	214	Right-handed 310
Helix 82	82	O	22	34	Right-handed alpha
Helix 83	83	O	62	66	Right-handed 310
Helix 84	84	O	83	106	Right-handed alpha
Helix 85	85	O	110	128	Right-handed alpha
Helix 86	86	O	171	183	Right-handed alpha
Helix 87	87	O	190	206	Right-handed alpha
Helix 88	88	O	231	244	Right-handed alpha
Helix 89	89	P	18	30	Right-handed alpha
Helix 90	90	P	78	101	Right-handed alpha
Helix 91	91	P	105	120	Right-handed alpha
Helix 92	92	P	165	177	Right-handed alpha
Helix 93	93	P	182	196	Right-handed alpha
Helix 94	94	P	221	230	Right-handed alpha
Helix 95	95	Q	18	29	Right-handed alpha
Helix 96	96	Q	79	102	Right-handed alpha
Helix 97	97	Q	106	121	Right-handed alpha
Helix 98	98	Q	169	179	Right-handed alpha
Helix 99	99	Q	185	200	Right-handed alpha
Helix 100	100	Q	229	242	Right-handed alpha
Helix 101	101	R	16	28	Right-handed alpha
Helix 102	102	R	55	60	Right-handed 310
Helix 103	103	R	76	98	Right-handed alpha
Helix 104	104	R	103	118	Right-handed alpha
Helix 105	105	R	164	173	Right-handed alpha
Helix 106	106	R	183	197	Right-handed alpha
Helix 107	107	R	221	229	Right-handed alpha
Helix 108	108	S	21	32	Right-handed alpha
Helix 109	109	S	81	104	Right-handed alpha
Helix 110	110	S	108	118	Right-handed alpha
Helix 111	111	S	173	185	Right-handed alpha
Helix 112	112	S	190	206	Right-handed alpha
Helix 113	113	S	230	239	Right-handed alpha
Helix 114	114	T	19	32	Right-handed alpha
Helix 115	115	T	77	100	Right-handed alpha
Helix 116	116	T	104	118	Right-handed alpha
Helix 117	117	T	119	121	Right-handed 310
Helix 118	118	T	164	180	Right-handed alpha
Helix 119	119	T	183	198	Right-handed alpha
Helix 120	120	T	226	228	Right-handed 310
Helix 121	121	T	229	234	Right-handed alpha
Helix 122	122	U	20	32	Right-handed alpha
Helix 123	123	U	80	103	Right-handed alpha
Helix 124	124	U	107	122	Right-handed alpha
Helix 125	125	U	168	177	Right-handed alpha
Helix 126	126	U	180	184	Right-handed 310
Helix 127	127	U	185	201	Right-handed alpha
Helix 128	128	U	228	244	Right-handed alpha
Helix 129	129	V	48	71	Right-handed alpha
Helix 130	130	V	75	90	Right-handed alpha
Helix 131	131	V	129	134	Right-handed 310
Helix 132	132	V	135	143	Right-handed alpha
Helix 133	133	V	148	167	Right-handed alpha
Helix 134	134	V	190	194	Right-handed 310
Helix 135	135	W	48	71	Right-handed alpha
Helix 136	136	W	75	90	Right-handed alpha
Helix 137	137	W	130	141	Right-handed alpha
Helix 138	138	W	147	153	Right-handed alpha
Helix 139	139	W	153	166	Right-handed alpha
Helix 140	140	X	56	78	Right-handed alpha
Helix 141	141	X	83	97	Right-handed alpha
Helix 142	142	X	142	154	Right-handed alpha
Helix 143	143	X	159	175	Right-handed alpha
Helix 144	144	X	176	178	Right-handed 310
Helix 145	145	Y	51	72	Right-handed alpha
Helix 146	146	Y	76	93	Right-handed alpha
Helix 147	147	Y	133	147	Right-handed alpha
Helix 148	148	Y	152	170	Right-handed alpha
Helix 149	149	Z	48	71	Right-handed alpha
Helix 150	150	Z	75	89	Right-handed alpha
Helix 151	151	Z	131	141	Right-handed alpha
Helix 152	152	Z	148	167	Right-handed alpha
Helix 153	153	Z	192	200	Right-handed alpha
Helix 154	154	1	57	80	Right-handed alpha
Helix 155	155	1	84	98	Right-handed alpha
Helix 156	156	1	141	153	Right-handed alpha
Helix 157	157	1	167	186	Right-handed alpha
Helix 158	158	2	57	78	Right-handed alpha
Helix 159	159	2	84	102	Right-handed alpha
Helix 160	160	2	141	146	Right-handed alpha
Helix 161	161	2	146	155	Right-handed alpha
Helix 162	162	2	161	180	Right-handed alpha
Helix 163	163	2	209	214	Right-handed 310

There are 70 sheets in PDB entry 1IRU. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, AA, AB, AC, AD, AE, AF, AG, AH, AI, AJ, AK, AL, AM, AN, AO, AP, AQ, AR, AS, AT, AU, AV, AW, AX, AY, AZ, BA, BB, BC, BD, BE, BF, BG, BH, BI, BJ, BK, BL, BM, BN, BO, BP, BQ, BR,

There are 5 strands in A sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	165	169	first strand
Strand 2	A	38	43	anti-parallel
Strand 3	A	47	53	anti-parallel
Strand 4	A	215	221	anti-parallel
Strand 5	A	224	229	anti-parallel

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There are 5 strands in B sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	69	71	first strand
Strand 2	A	77	82	anti-parallel
Strand 3	A	136	144	anti-parallel
Strand 4	A	148	154	anti-parallel
Strand 5	A	160	162	anti-parallel

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There are 5 strands in C sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	159	162	first strand
Strand 2	B	34	38	anti-parallel
Strand 3	B	43	48	anti-parallel
Strand 4	B	207	213	anti-parallel
Strand 5	B	216	219	anti-parallel

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There are 5 strands in D sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	65	66	first strand
Strand 2	B	71	77	anti-parallel
Strand 3	B	131	138	anti-parallel
Strand 4	B	143	148	anti-parallel
Strand 5	B	154	156	anti-parallel

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There are 5 strands in E sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	161	164	first strand
Strand 2	C	34	37	anti-parallel
Strand 3	C	42	47	anti-parallel
Strand 4	C	212	217	anti-parallel
Strand 5	C	224	227	anti-parallel

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There are 5 strands in F sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	65	67	first strand
Strand 2	C	72	78	anti-parallel
Strand 3	C	132	140	anti-parallel
Strand 4	C	144	151	anti-parallel
Strand 5	C	155	158	anti-parallel

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There are 5 strands in G sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	158	161	first strand
Strand 2	D	32	35	anti-parallel
Strand 3	D	40	45	anti-parallel
Strand 4	D	208	212	anti-parallel
Strand 5	D	217	218	anti-parallel

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There are 5 strands in H sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	62	64	first strand
Strand 2	D	70	75	anti-parallel
Strand 3	D	129	136	anti-parallel
Strand 4	D	142	147	anti-parallel
Strand 5	D	153	155	anti-parallel

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There are 5 strands in I sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	167	170	first strand
Strand 2	E	37	42	anti-parallel
Strand 3	E	45	51	anti-parallel
Strand 4	E	215	220	anti-parallel
Strand 5	E	227	228	anti-parallel

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There are 5 strands in J sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	67	71	first strand
Strand 2	E	74	80	anti-parallel
Strand 3	E	139	147	anti-parallel
Strand 4	E	150	156	anti-parallel
Strand 5	E	162	164	anti-parallel

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There are 5 strands in K sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	158	161	first strand
Strand 2	F	35	39	anti-parallel
Strand 3	F	43	49	anti-parallel
Strand 4	F	210	216	anti-parallel
Strand 5	F	219	224	anti-parallel

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There are 5 strands in L sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	63	67	first strand
Strand 2	F	70	76	anti-parallel
Strand 3	F	130	138	anti-parallel
Strand 4	F	141	147	anti-parallel
Strand 5	F	153	156	anti-parallel

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There are 5 strands in M sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	162	165	first strand
Strand 2	G	36	40	anti-parallel
Strand 3	G	45	52	anti-parallel
Strand 4	G	209	215	anti-parallel
Strand 5	G	225	226	anti-parallel

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There are 5 strands in N sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	66	70	first strand
Strand 2	G	73	79	anti-parallel
Strand 3	G	133	141	anti-parallel
Strand 4	G	145	151	anti-parallel
Strand 5	G	157	159	anti-parallel

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There are 5 strands in O sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	125	128	first strand
Strand 2	H	3	8	anti-parallel
Strand 3	H	11	16	anti-parallel
Strand 4	H	174	180	anti-parallel
Strand 5	H	183	189	anti-parallel

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There are 2 strands in P sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	20	22	first strand
Strand 2	H	25	28	anti-parallel

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There are 5 strands in Q sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	34	38	first strand
Strand 2	H	41	47	anti-parallel
Strand 3	H	96	104	anti-parallel
Strand 4	H	108	114	anti-parallel
Strand 5	H	121	122	anti-parallel

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There are 7 strands in R sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	124	127	first strand
Strand 2	I	3	8	anti-parallel
Strand 3	I	11	16	anti-parallel
Strand 4	I	173	179	anti-parallel
Strand 5	I	182	184	anti-parallel
Strand 6	I	173	179	anti-parallel
Strand 7	I	188	190	anti-parallel

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There are 2 strands in S sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	20	21	first strand
Strand 2	I	26	28	anti-parallel

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There are 5 strands in T sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	34	38	first strand
Strand 2	I	41	47	anti-parallel
Strand 3	I	96	103	anti-parallel
Strand 4	I	108	113	anti-parallel
Strand 5	I	119	121	anti-parallel

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There are 5 strands in U sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	136	140	first strand
Strand 2	J	10	15	anti-parallel
Strand 3	J	19	25	anti-parallel
Strand 4	J	185	191	anti-parallel
Strand 5	J	195	199	anti-parallel

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There are 2 strands in V sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	28	30	first strand
Strand 2	J	33	36	anti-parallel

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There are 5 strands in W sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	42	44	first strand
Strand 2	J	49	52	anti-parallel
Strand 3	J	108	112	anti-parallel
Strand 4	J	119	124	anti-parallel
Strand 5	J	130	132	anti-parallel

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There are 5 strands in X sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	129	132	first strand
Strand 2	K	4	8	anti-parallel
Strand 3	K	12	18	anti-parallel
Strand 4	K	178	184	anti-parallel
Strand 5	K	187	189	anti-parallel

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There are 2 strands in Y sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	21	23	first strand
Strand 2	K	26	29	anti-parallel

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There are 5 strands in Z sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	35	37	first strand
Strand 2	K	42	48	anti-parallel
Strand 3	K	100	108	anti-parallel
Strand 4	K	112	118	anti-parallel
Strand 5	K	124	126	anti-parallel

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There are 5 strands in AA sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	125	128	first strand
Strand 2	L	3	8	anti-parallel
Strand 3	L	11	16	anti-parallel
Strand 4	L	173	179	anti-parallel
Strand 5	L	184	191	anti-parallel

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There are 2 strands in AB sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	20	22	first strand
Strand 2	L	25	28	anti-parallel

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There are 5 strands in AC sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	34	38	first strand
Strand 2	L	41	44	anti-parallel
Strand 3	L	98	104	anti-parallel
Strand 4	L	109	115	anti-parallel
Strand 5	L	120	122	anti-parallel

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There are 5 strands in AD sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	135	139	first strand
Strand 2	M	11	17	anti-parallel
Strand 3	M	20	26	anti-parallel
Strand 4	M	192	199	anti-parallel
Strand 5	M	202	209	anti-parallel

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There are 2 strands in AE sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	29	31	first strand
Strand 2	M	34	37	anti-parallel

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There are 5 strands in AF sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	43	47	first strand
Strand 2	M	50	56	anti-parallel
Strand 3	M	106	113	anti-parallel
Strand 4	M	119	124	anti-parallel
Strand 5	M	130	133	anti-parallel

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There are 7 strands in AG sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	N	7	8	first strand
Strand 2	N	49	56	anti-parallel
Strand 3	N	42	45	anti-parallel
Strand 4	N	49	56	anti-parallel
Strand 5	N	108	116	anti-parallel
Strand 6	N	119	125	anti-parallel
Strand 7	N	131	133	anti-parallel

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There are 5 strands in AH sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	N	136	138	first strand
Strand 2	N	12	16	anti-parallel
Strand 3	N	19	25	anti-parallel
Strand 4	N	187	193	anti-parallel
Strand 5	N	196	203	anti-parallel

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There are 2 strands in AI sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	N	28	30	first strand
Strand 2	N	33	36	anti-parallel

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There are 5 strands in AJ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	165	169	first strand
Strand 2	O	38	43	anti-parallel
Strand 3	O	47	53	anti-parallel
Strand 4	O	215	221	anti-parallel
Strand 5	O	224	229	anti-parallel

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There are 5 strands in AK sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	69	71	first strand
Strand 2	O	77	82	anti-parallel
Strand 3	O	136	144	anti-parallel
Strand 4	O	148	154	anti-parallel
Strand 5	O	160	162	anti-parallel

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There are 5 strands in AL sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	P	159	162	first strand
Strand 2	P	34	38	anti-parallel
Strand 3	P	43	48	anti-parallel
Strand 4	P	207	213	anti-parallel
Strand 5	P	216	219	anti-parallel

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There are 5 strands in AM sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	P	65	66	first strand
Strand 2	P	71	77	anti-parallel
Strand 3	P	131	138	anti-parallel
Strand 4	P	143	148	anti-parallel
Strand 5	P	154	156	anti-parallel

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There are 5 strands in AN sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Q	161	164	first strand
Strand 2	Q	34	37	anti-parallel
Strand 3	Q	42	47	anti-parallel
Strand 4	Q	212	217	anti-parallel
Strand 5	Q	224	227	anti-parallel

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There are 5 strands in AO sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Q	65	67	first strand
Strand 2	Q	72	78	anti-parallel
Strand 3	Q	132	140	anti-parallel
Strand 4	Q	144	151	anti-parallel
Strand 5	Q	155	158	anti-parallel

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There are 5 strands in AP sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	R	158	161	first strand
Strand 2	R	32	35	anti-parallel
Strand 3	R	40	45	anti-parallel
Strand 4	R	208	212	anti-parallel
Strand 5	R	217	218	anti-parallel

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There are 5 strands in AQ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	R	62	64	first strand
Strand 2	R	70	75	anti-parallel
Strand 3	R	129	136	anti-parallel
Strand 4	R	142	147	anti-parallel
Strand 5	R	153	155	anti-parallel

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There are 5 strands in AR sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	S	167	170	first strand
Strand 2	S	37	42	anti-parallel
Strand 3	S	45	51	anti-parallel
Strand 4	S	215	220	anti-parallel
Strand 5	S	227	228	anti-parallel

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There are 5 strands in AS sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	S	67	71	first strand
Strand 2	S	74	80	anti-parallel
Strand 3	S	139	147	anti-parallel
Strand 4	S	150	156	anti-parallel
Strand 5	S	162	164	anti-parallel

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There are 5 strands in AT sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	T	158	161	first strand
Strand 2	T	35	39	anti-parallel
Strand 3	T	43	49	anti-parallel
Strand 4	T	210	216	anti-parallel
Strand 5	T	219	224	anti-parallel

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There are 5 strands in AU sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	T	63	67	first strand
Strand 2	T	70	76	anti-parallel
Strand 3	T	130	138	anti-parallel
Strand 4	T	141	147	anti-parallel
Strand 5	T	153	156	anti-parallel

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There are 5 strands in AV sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	U	162	165	first strand
Strand 2	U	36	40	anti-parallel
Strand 3	U	45	52	anti-parallel
Strand 4	U	209	215	anti-parallel
Strand 5	U	225	226	anti-parallel

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There are 5 strands in AW sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	U	66	70	first strand
Strand 2	U	73	79	anti-parallel
Strand 3	U	133	141	anti-parallel
Strand 4	U	145	151	anti-parallel
Strand 5	U	157	160	anti-parallel

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There are 5 strands in AX sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	V	125	128	first strand
Strand 2	V	3	8	anti-parallel
Strand 3	V	11	16	anti-parallel
Strand 4	V	174	180	anti-parallel
Strand 5	V	183	189	anti-parallel

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There are 2 strands in AY sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	V	20	22	first strand
Strand 2	V	25	28	anti-parallel

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There are 5 strands in AZ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	V	34	38	first strand
Strand 2	V	41	47	anti-parallel
Strand 3	V	96	104	anti-parallel
Strand 4	V	108	114	anti-parallel
Strand 5	V	121	122	anti-parallel

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There are 7 strands in BA sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	W	124	127	first strand
Strand 2	W	3	8	anti-parallel
Strand 3	W	11	16	anti-parallel
Strand 4	W	173	179	anti-parallel
Strand 5	W	182	184	anti-parallel
Strand 6	W	173	179	anti-parallel
Strand 7	W	188	190	anti-parallel

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There are 2 strands in BB sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	W	20	21	first strand
Strand 2	W	26	28	anti-parallel

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There are 5 strands in BC sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	W	34	38	first strand
Strand 2	W	41	47	anti-parallel
Strand 3	W	96	103	anti-parallel
Strand 4	W	108	113	anti-parallel
Strand 5	W	119	121	anti-parallel

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There are 5 strands in BD sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	X	136	140	first strand
Strand 2	X	10	15	anti-parallel
Strand 3	X	19	25	anti-parallel
Strand 4	X	185	191	anti-parallel
Strand 5	X	195	199	anti-parallel

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There are 2 strands in BE sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	X	28	30	first strand
Strand 2	X	33	36	anti-parallel

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There are 5 strands in BF sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	X	42	44	first strand
Strand 2	X	49	52	anti-parallel
Strand 3	X	108	112	anti-parallel
Strand 4	X	119	124	anti-parallel
Strand 5	X	130	132	anti-parallel

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There are 5 strands in BG sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Y	129	132	first strand
Strand 2	Y	4	8	anti-parallel
Strand 3	Y	12	18	anti-parallel
Strand 4	Y	178	184	anti-parallel
Strand 5	Y	187	189	anti-parallel

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There are 2 strands in BH sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Y	21	23	first strand
Strand 2	Y	26	29	anti-parallel

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There are 5 strands in BI sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Y	35	37	first strand
Strand 2	Y	42	48	anti-parallel
Strand 3	Y	100	108	anti-parallel
Strand 4	Y	112	118	anti-parallel
Strand 5	Y	124	126	anti-parallel

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There are 5 strands in BJ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Z	125	128	first strand
Strand 2	Z	3	8	anti-parallel
Strand 3	Z	11	16	anti-parallel
Strand 4	Z	173	179	anti-parallel
Strand 5	Z	184	191	anti-parallel

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There are 2 strands in BK sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Z	20	22	first strand
Strand 2	Z	25	28	anti-parallel

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There are 5 strands in BL sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Z	34	38	first strand
Strand 2	Z	41	44	anti-parallel
Strand 3	Z	98	104	anti-parallel
Strand 4	Z	109	115	anti-parallel
Strand 5	Z	120	122	anti-parallel

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There are 5 strands in BM sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	1	135	139	first strand
Strand 2	1	11	17	anti-parallel
Strand 3	1	20	26	anti-parallel
Strand 4	1	192	199	anti-parallel
Strand 5	1	202	209	anti-parallel

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There are 2 strands in BN sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	1	29	31	first strand
Strand 2	1	34	37	anti-parallel

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There are 5 strands in BO sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	1	43	47	first strand
Strand 2	1	50	56	anti-parallel
Strand 3	1	106	113	anti-parallel
Strand 4	1	119	124	anti-parallel
Strand 5	1	130	133	anti-parallel

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There are 7 strands in BP sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	2	7	8	first strand
Strand 2	2	49	56	anti-parallel
Strand 3	2	42	45	anti-parallel
Strand 4	2	49	56	anti-parallel
Strand 5	2	108	116	anti-parallel
Strand 6	2	119	125	anti-parallel
Strand 7	2	131	133	anti-parallel

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There are 5 strands in BQ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	2	136	138	first strand
Strand 2	2	12	16	anti-parallel
Strand 3	2	19	25	anti-parallel
Strand 4	2	187	193	anti-parallel
Strand 5	2	196	203	anti-parallel

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There are 2 strands in BR sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	2	28	30	first strand
Strand 2	2	33	36	anti-parallel

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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il

Analysis of interatomic Contacts of Structural Units in PDB entry: 1IRU

Analysis of interatomic Contacts of Structural Units in PDB entry:
1IRU